徐培彬,温瑞智. 2018. 基于我国强震动数据的地震动持时预测方程. 地震学报,40(6):809−819. doi:10.11939/jass.20180008. doi: 10.11939/jass.20180008
引用本文: 徐培彬,温瑞智. 2018. 基于我国强震动数据的地震动持时预测方程. 地震学报,40(6):809−819. doi:10.11939/jass.20180008. doi: 10.11939/jass.20180008
Xu P B,Wen R Z. 2018. The prediction equations for the significant duration of strong motion in Chinese mainland. Acta Seismologica Sinica40(6):809−819. doi:10.11939/jass.20180008. doi: 10.11939/jass.20180008
Citation: Xu P B,Wen R Z. 2018. The prediction equations for the significant duration of strong motion in Chinese mainland. Acta Seismologica Sinica40(6):809−819. doi:10.11939/jass.20180008. doi: 10.11939/jass.20180008

基于我国强震动数据的地震动持时预测方程

The prediction equations for the significant duration of strong motion in Chinese mainland

  • 摘要: 基于2007—2015年间我国数字强震动观测台网记录到的MW5.0—6.6地震事件中的强震动记录,综合考虑震源、传播路径及场地的影响,采用随机效应回归分析方法建立了适用于中国大陆地区的地震动显著持时预测方程,并与其它地区的预测方程进行了对比分析。结果显示:显著持时随震级和距离的增大而增大,硬土场地的地震动持时整体上略小于软土场地,而且本文给出的地震动显著持时随预测变量的变化趋势与其它研究地区具有一定的相似性。

     

    Abstract: The earthquake damages of engineering structures have been affected by the amplitude, frequency and duration of the strong motion records. However, there are relatively few published duration equations available in Chinese mainland. In this paper, we collected the strong motion records with magnitude MW5.0—6.6 during 2007—2015 from Chinese digital strong motion networks. Considering the effects of source, path and site, the random-effected regression technique was adopted to fit a predictive equation in respect to the significant duration. In comparing the predicted durations with other studies, it is shown that this predicted significant duration increases with the increased earthquake magnitude or the increased distance, and decreases with the increased vS30. Furthermore, it has the similar characteristics with other studied regions.

     

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